There is a fault and the reason behind it is, the 12V shorted.
I have been trying to open up the power supply. There are no screws. How do I prise it open and make the repair? :D
I am helping someone to repair the keyboard, seemed to be sticking when press c gets cv, d gets df, e gets er and t gets T.
Reinstalled XP, drivers that came with HP, flashed the BIOS. What else?
Clean the keyboard underneath. :D